135597139 has 2 divisors, whose sum is σ = 135597140. Its totient is φ = 135597138.

The previous prime is 135597113. The next prime is 135597179. The reversal of 135597139 is 931795531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135597139 - 2¹⁹ = 135072851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135597095 and 135597104.

It is not a weakly prime, because it can be changed into another prime (135597179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67798569 + 67798570.

It is an arithmetic number, because the mean of its divisors is an integer number (67798570).

Almost surely, 2^135597139 is an apocalyptic number.

135597139 is a deficient number, since it is larger than the sum of its proper divisors (1).

135597139 is an equidigital number, since it uses as much as digits as its factorization.

135597139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127575, while the sum is 43.

The square root of 135597139 is about 11644.6184566090. The cubic root of 135597139 is about 513.7480369644.

The spelling of 135597139 in words is "one hundred thirty-five million, five hundred ninety-seven thousand, one hundred thirty-nine".